Flights Chicago → London — September 22, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Tuesday, September 22, 2026 on the Chicago–London route: 2 stops itinerary (3 flights) via Reykjavik (KEF) and Copenhagen (CPH), from Chicago O'Hare (ORD) to London Stansted (STN), first flight Icelandair FI852, departs 7:25 PM, arrives 12:10 AM 2 days later, total travel time 22h 45m including layovers, flight time 11h 25m (layovers excluded), $334 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes not allowed, non-refundable. Price found in an Aviasales search on September 7, 2026 and read by AirSource on September 10, 2026, 19:00 UTC: it is not guaranteed and is confirmed on Aviasales at booking time. The cheapest direct flight observed: British Airways BA298, from Chicago O'Hare (ORD) to London Heathrow (LHR), departs 7:05 PM, arrives 9:05 AM the next day, direct, 8h, $710 per person. Fare as listed by Aviasales: carry-on bag included, checked bag not included, changes allowed for a fee, non-refundable.